.title {
    color: #333;
    display: block;
    text-align: center;
    height: 56rpx;
    line-height: 56rpx;
    font-size: 4vw;
    padding-top: 0.8vw;
    z-index: 1;
    position: relative;
}
.fff{
    background-color: #ffffff;
}
.back-box{
    position: relative;
}
.back{
    width: 40rpx;
    height: 40rpx;
    position: absolute;
    left: 24rpx;
    top: 10rpx;
}
.home{
    width: 40rpx;
    height: 40rpx;
    position: absolute;
    left: 24rpx;
}